Fix compilation on Mac OS X
Fix compilation on Mac OS X

Thanks to Olivier Hervieu for the bug report.

lotrfan/dvtm,seanyeh/dvtm,gridsystem/dvtmx,benjohnson2001/dvtm,lotrfan/dvtm,armanbilge/dvtm,tgvaughan/dvtm,raedwulf/dvtm,tgvaughan/dvtm,benjohnson2001/dvtm,raedwulf/dvtm,medgar123/dvtm,seanyeh/dvtm,medgar123/dvtm,benjohnson2001/dvtm,gridsystem/dvtmx,lotrfan/dvtm,samaaron/dvtm,delphinus35/dvtm,samaaron/dvtm,armanbilge/dvtm,medgar123/dvtm,tgvaughan/dvtm,raedwulf/dvtm,delphinus35/dvtm,seanyeh/dvtm